KH-550改性聚磷酸铵阻燃油松松针粉末的性能研究  

Study of KH-550 modificed ammonium polyphosphate flame retarded Pinus tabuliformis pine needles powder

作　　者：邵明珠[1] 李丽萍[1] 陈永祥[1] 

机构地区：[1]东北林业大学理学院,阻燃材料分子设计与制备黑龙江省重点实验室,黑龙江哈尔滨150040

出　　处：《中南林业科技大学学报》2016年第4期125-129,共5页Journal of Central South University of Forestry & Technology

基　　金：国家自然科学基金项目(31570572);黑龙江省博士后科研启动金资助(LBH-Q13010)

摘　　要：采用硅烷偶联剂(KH-550)对聚磷酸铵(APP)进行表面改性处理,并应用于森林可燃物油松松针粉末阻燃处理。采用FT-IR和SEM对改性阻燃剂KH-550/APP进行了结构表征,热重分析法和锥形量热分析法对阻燃油松松针进行了热稳定性、阻燃性能及燃烧性能分析,研究表明,改性后的APP表面结构发生了明显变化,硅烷偶联剂的羟基与APP表面的羟基发生了化学反应,与未改性APP比较,改性APP更加稳定,650℃时残炭量由42.3%提高到了47.3%,最大热释放速率由103.1 k W·m^(-2)下降到82.9 k W·m^(-2),总热释放量下降了5.6%,并且烟释放速率、总烟释放速率均达到最小值,偶联剂的引入对APP热分解成炭有积极的影响,有效的对松针起到了阻燃及抑烟的作用。The silane coupling agent （KH-550） was used to modify the surface properties of ammonium polyphosphate （APP）, which was applied in Pinus tabuliformis pine needles powder flame retardant. The structure of modified fire retardant KH-550/APP was characterized by FT-IR and SEM,therrnal gravimetric analysis and cone calorimeter were carried on thermal stability, flame retardancy and combustion performance analysis. The results showed that significant changes in surface structure modified APP occured, the hydroxyl of silane coupling agent and the hydroxyl of APP occurred chemical reaction. Compared with the unmodified APE the modified APP was more stable, and the char residue at 650℃ was increased from 42.3% to 47.3%, the maximum heat release rate was decreased from the 103.1 kW·m-2 to 82.9 kW.m2, the total heat release rate was decreased by 5.6%, the smoke release rate and total smoke release rate was reached minimum. The introduction of silane coupling agent had a positive impact on the thermal decomposition of APP. It played a significant flame retardant role on pine needles effectively.

关 键 词：聚磷酸铵 KH-550 表面改性 油松松针 阻燃性能 

分 类 号：S791.254[农业科学—林木遗传育种]